What is the difference between the 35-6HB, CP 35-6HB & ULT 35-6HB?
The 35-6HB will accommodate six 6 frame 35mm un-sleeved negatives and is made from archival 4.8 mil polyethylene. The CP 35-6HB is exactly the same as the 35-6HB but has an additional 81/2″ x 11″ pocket attached to the preserver for a contact sheet. The ULT35-6HB will accommodate six 6 frame 35mm negatives but the openings are slightly larger in order to accept a strip of sleeved 35mm negatives. The Ultima negative preservers are also 6 mil polypropylene.